Total organic and inorganic carbon exchange through the Strait of Gibraltar in September 1997
International audience The total organic carbon (TOC) and total inorganic carbon (C T) exchange between the Atlantic Ocean and the Mediterranean Sea was studied in the Strait of Gibraltar in September 1997. Samples were taken at eight stations from western and eastern entrances of the Strait and at...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2001
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Online Access: | https://amu.hal.science/hal-02063115 https://amu.hal.science/hal-02063115/document https://amu.hal.science/hal-02063115/file/Daf%20et%20al_DSR-HAL.pdf https://doi.org/10.1016/S0967-0637(00)00064-9 |
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ftunivtoulon:oai:HAL:hal-02063115v1 |
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Open Polar |
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Université de Toulon: HAL |
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ftunivtoulon |
language |
English |
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Chemical oceanography Carbon Water exchange Gibraltar Strait DOC [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
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Chemical oceanography Carbon Water exchange Gibraltar Strait DOC [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Dafner, Evgeny Gonzalez-Davila, Melchor Magdalena Santana-Casiano, J. Sempere, Richard Total organic and inorganic carbon exchange through the Strait of Gibraltar in September 1997 |
topic_facet |
Chemical oceanography Carbon Water exchange Gibraltar Strait DOC [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience The total organic carbon (TOC) and total inorganic carbon (C T) exchange between the Atlantic Ocean and the Mediterranean Sea was studied in the Strait of Gibraltar in September 1997. Samples were taken at eight stations from western and eastern entrances of the Strait and at the middle of the Strait (Tarifa Narrows). TOC was analyzed by a high-temperature catalytic oxidation method, and C T was calculated from alkalinity}pH 2 pairs and appropriate thermodynamic relationships. The results are used in a two-layer model of water mass exchange through the Strait, which includes the Atlantic in flow, the Mediterranean out flow and the interface layer in between. Our observations show a decrease of TOC and an increase of C T concentrations from the surface to the bottom: 71}132 M C and 2068}2150 mol kg\ in the Surface Atlantic Water, 74 }95 M C and 2119}214 8 mol kg\ in the North Atlantic Central Water, 63}116 M C and 2123}2312 mol kg\ in the interface layer, and 61}78 M C and 2307}2325 mol kg\ in the Mediterranean waters. However, within the Mediterranean out flow, we found that the concentrations of carbon were higher at the western side of the Strait (75}78 M C, 2068}2318 mol kg\) than at the eastern side (61}69 M C, 2082}2324 mol kg\). This di!erence is due to the mixing between the Atlantic in#ow and the Mediterranean out#ow on the west of the Strait, which results in a #ux of organic carbon from the in#ow to the out#ow and an opposite flux of inorganic carbon. We estimate that the TOC input from the Atlantic Ocean to the Mediterranean Sea through the Strait of Gibraltar varies from (0.97+-0.8)10 to (1.81$0.90)10 mol C s\ (0.3;10 to 0.56;10 mol C yr\), while out flow of inorganic carbon ranges from (12.5$0.4)10 to (15.6$0.4)10 mol C s\ (3.99}4 .90;10 mol C yr\). The high variability of carbon exchange within the Strait is due to the variability of vertical mixing between in flow and out flow along the Strait. The prevalence of organic carbon in flow and inorganic carbon out flow shows ... |
author2 |
Institut de Microbiologie de la Méditerranée (IMM) Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS) Facultad de Ciencias del Mar (FCM) University of Las Palmas de Gran Canaria (ULPGC) Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) This research was funded by the European Commission, MAST III Programme (Contract MAS3-CT96-0060). Financial support for E.V. Dafner came from Ministère Affaires Étrangères Français and Conseil Général des Bouches du Rhone, (France). |
format |
Article in Journal/Newspaper |
author |
Dafner, Evgeny Gonzalez-Davila, Melchor Magdalena Santana-Casiano, J. Sempere, Richard |
author_facet |
Dafner, Evgeny Gonzalez-Davila, Melchor Magdalena Santana-Casiano, J. Sempere, Richard |
author_sort |
Dafner, Evgeny |
title |
Total organic and inorganic carbon exchange through the Strait of Gibraltar in September 1997 |
title_short |
Total organic and inorganic carbon exchange through the Strait of Gibraltar in September 1997 |
title_full |
Total organic and inorganic carbon exchange through the Strait of Gibraltar in September 1997 |
title_fullStr |
Total organic and inorganic carbon exchange through the Strait of Gibraltar in September 1997 |
title_full_unstemmed |
Total organic and inorganic carbon exchange through the Strait of Gibraltar in September 1997 |
title_sort |
total organic and inorganic carbon exchange through the strait of gibraltar in september 1997 |
publisher |
HAL CCSD |
publishDate |
2001 |
url |
https://amu.hal.science/hal-02063115 https://amu.hal.science/hal-02063115/document https://amu.hal.science/hal-02063115/file/Daf%20et%20al_DSR-HAL.pdf https://doi.org/10.1016/S0967-0637(00)00064-9 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0146-6313 Deep Sea Research (1953) https://amu.hal.science/hal-02063115 Deep Sea Research (1953), 2001, 8 (5), pp.1217 - 1236. ⟨10.1016/S0967-0637(00)00064-9⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0967-0637(00)00064-9 hal-02063115 https://amu.hal.science/hal-02063115 https://amu.hal.science/hal-02063115/document https://amu.hal.science/hal-02063115/file/Daf%20et%20al_DSR-HAL.pdf doi:10.1016/S0967-0637(00)00064-9 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/S0967-0637(00)00064-9 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
48 |
container_issue |
5 |
container_start_page |
1217 |
op_container_end_page |
1235 |
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1786831560194916352 |
spelling |
ftunivtoulon:oai:HAL:hal-02063115v1 2023-12-31T10:20:57+01:00 Total organic and inorganic carbon exchange through the Strait of Gibraltar in September 1997 Dafner, Evgeny Gonzalez-Davila, Melchor Magdalena Santana-Casiano, J. Sempere, Richard Institut de Microbiologie de la Méditerranée (IMM) Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS) Facultad de Ciencias del Mar (FCM) University of Las Palmas de Gran Canaria (ULPGC) Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) This research was funded by the European Commission, MAST III Programme (Contract MAS3-CT96-0060). Financial support for E.V. Dafner came from Ministère Affaires Étrangères Français and Conseil Général des Bouches du Rhone, (France). 2001 https://amu.hal.science/hal-02063115 https://amu.hal.science/hal-02063115/document https://amu.hal.science/hal-02063115/file/Daf%20et%20al_DSR-HAL.pdf https://doi.org/10.1016/S0967-0637(00)00064-9 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/S0967-0637(00)00064-9 hal-02063115 https://amu.hal.science/hal-02063115 https://amu.hal.science/hal-02063115/document https://amu.hal.science/hal-02063115/file/Daf%20et%20al_DSR-HAL.pdf doi:10.1016/S0967-0637(00)00064-9 info:eu-repo/semantics/OpenAccess ISSN: 0146-6313 Deep Sea Research (1953) https://amu.hal.science/hal-02063115 Deep Sea Research (1953), 2001, 8 (5), pp.1217 - 1236. ⟨10.1016/S0967-0637(00)00064-9⟩ Chemical oceanography Carbon Water exchange Gibraltar Strait DOC [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2001 ftunivtoulon https://doi.org/10.1016/S0967-0637(00)00064-9 2023-12-05T23:41:56Z International audience The total organic carbon (TOC) and total inorganic carbon (C T) exchange between the Atlantic Ocean and the Mediterranean Sea was studied in the Strait of Gibraltar in September 1997. Samples were taken at eight stations from western and eastern entrances of the Strait and at the middle of the Strait (Tarifa Narrows). TOC was analyzed by a high-temperature catalytic oxidation method, and C T was calculated from alkalinity}pH 2 pairs and appropriate thermodynamic relationships. The results are used in a two-layer model of water mass exchange through the Strait, which includes the Atlantic in flow, the Mediterranean out flow and the interface layer in between. Our observations show a decrease of TOC and an increase of C T concentrations from the surface to the bottom: 71}132 M C and 2068}2150 mol kg\ in the Surface Atlantic Water, 74 }95 M C and 2119}214 8 mol kg\ in the North Atlantic Central Water, 63}116 M C and 2123}2312 mol kg\ in the interface layer, and 61}78 M C and 2307}2325 mol kg\ in the Mediterranean waters. However, within the Mediterranean out flow, we found that the concentrations of carbon were higher at the western side of the Strait (75}78 M C, 2068}2318 mol kg\) than at the eastern side (61}69 M C, 2082}2324 mol kg\). This di!erence is due to the mixing between the Atlantic in#ow and the Mediterranean out#ow on the west of the Strait, which results in a #ux of organic carbon from the in#ow to the out#ow and an opposite flux of inorganic carbon. We estimate that the TOC input from the Atlantic Ocean to the Mediterranean Sea through the Strait of Gibraltar varies from (0.97+-0.8)10 to (1.81$0.90)10 mol C s\ (0.3;10 to 0.56;10 mol C yr\), while out flow of inorganic carbon ranges from (12.5$0.4)10 to (15.6$0.4)10 mol C s\ (3.99}4 .90;10 mol C yr\). The high variability of carbon exchange within the Strait is due to the variability of vertical mixing between in flow and out flow along the Strait. The prevalence of organic carbon in flow and inorganic carbon out flow shows ... Article in Journal/Newspaper North Atlantic Université de Toulon: HAL Deep Sea Research Part I: Oceanographic Research Papers 48 5 1217 1235 |